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INCOME TAXES - Movement of the valuation allowance (Details) - Allowance - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Movement of allowances |  |  |
Beginning of the year | $ 65,399 | $ 71,469 | $ 55,959
Additions (Reversals) | 11,051 | (5,361) | 14,486
Foreign exchange effect | 72 | (709) | 1,024
Closing balance | $ 76,522 | $ 65,399 | $ 71,469

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs which have been charged to costs and expenses net of the total of recoveries of amounts due the Entity that had previously been written off as uncollectible using allowances (the valuation accounts that are netted against the cost of an asset to value it at its carrying value) and total of reestablishments of reserves (liabilities established to represent expected future costs) that had previously been utilized. + References No definition available. + Details
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- Definition Total of the foreign exchange effects in a given period to allowances or reserves. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Details
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